USB: OHCI: make ohci-spear a separate driver

Separate the ST OHCI SPEAr host controller driver from ohci-hcd
host code so that it can be built as a separate driver module.
This work is part of enabling multi-platform kernels on ARM.

Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Signed-off-by: Deepak Saxena <dsaxena@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index f28d938..06ea754 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -373,6 +373,14 @@
 	---help---
 	  Enables support for the OHCI controller on OMAP1/2 chips.
 
+config USB_OHCI_HCD_SPEAR
+        tristate "Support for ST SPEAr on-chip OHCI USB controller"
+        depends on USB_OHCI_HCD && PLAT_SPEAR
+        default y
+        ---help---
+          Enables support for the on-chip OHCI controller on
+          ST SPEAr chips.
+
 config USB_OHCI_HCD_OMAP3
 	tristate "OHCI support for OMAP3 and later chips"
 	depends on (ARCH_OMAP3 || ARCH_OMAP4)